Heating apparatus.



. 'No. 351,400. PATENTBD APR. 23, 1907.

n. J. F. BUCK. v HEATING APPARATUS.

APPLICATION FILED AUG. 18, 1905.

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FLEE- DANIEL JOHN F, BUCK, OF CHICAGO, ILLINOIS.

HEATING APPARATUS.

Specification of Letters Patent.

.tatentecl April 23, 1907.

Application filed August 16, 1905. Serial No. 274,416-

To all whom it may concern:

Be it known that I, DANIEL JOHN F. Been, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Heating Apparatus, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to water heaters, and its object. is to provide simplified construction and arrangement of the parts thereof.

In Patent N 0. 817,219 issued to me April 10, 1906, I describe a primary heater consist ing of outer and inner concentric frames, each frame consisting of upper and lower annular heater sections connected by ipes or assageways through the center of which lies ass'for receiving the heat from burners place below the heater frames. In this patent I have shown and described the pipes and fines as threaded into the annular sections. This threaded arrangement, however, introduces complications and the assembly of the parts is very difficult.

In the present application I provide imroved means for engaging the piping and Sues with the sections, and this arrangement Will be best understood by reference to the accompanying drawing, in which Figure 1 is a top view of the heater, the top Wall being partly broken away, and Fig. 2 is a sectional view taken on line 22 of Fig. 1.

The heater consists of the outer frame 1 and the inner frame 2. The outer frame consists of the upper and lower annular flat heater sections 3 and 4f, while the inner frame consists of the flat annular upper and lower sections 5 and 6. The sections 3 and 4 com- Inunicate with each other through pipes 7, while the sections 5 and 6 communicate with each other through pipes 8. Of these pipes 7 and 8 there may be any number and they preferably enter the lower and upper walls respectively of the upper and lower heater sections. Through each of the pipes 7 and 8 a flue 9 passes, these flues being of smaller diameter to leave the annular spaces 10 and connect with the upper and lower walls of the upper and lower sections respectively. The upper heater sectlons communicate through pipes 11 of which there may be any number, and the lower heater sections are in communication through the pipes 12 of which there mayalso be any number. The water to be heated is fed to the lower heater sections through the pipe 13 while the heated water passes to the supply system from the upper heater sections through the piping 14. The burner mechanism, which may be composed of the two annular burner sections 15 and 16, arranged concentrically, is arranged below the lower heater sections and fed from the supply pipe 17 through the valve 18. The heater sections, )iping and burner mechanism are enclosed y the casing 19 which may be of any suitable construction.

In the patent above referred to, the pipes corresponding to pipes 8 in the present application are threaded into the lower walls of the upper and lower heater sections respectively, being for this purpose provided with right handed threads at one end and left handed threads at the other end. The flucs are also threaded into the lower wall of the lower section and fastened by means of threaded bushings to the upper walls of the upper sections. I have found, however, that this threaded arrangement renders assembling of the pipes and heater sections very difficult. I therefore obviate the necessity of threads by slightly tapering the ends 20 and 21 of the piping 7 and 8 and by correspondingly tapering the openings 22 and 23 in the lower and upper walls of the upper and lower heater sections respectively. The tapered ends of the piping are slightly longer than the thickness of the walls of the heater sections, and when the pipes are in place, the extending ends are upset to form flanges 24 which look the pipe ends securely within the tapered openings. The lower ends 25 of the flues 9 are preferably flared outwardly as shown, and the openings 26 are correspondingly tapered. The upper ends of these lines are threaded, and flanged bushings 27 engage through the openings 28 in the upper wall of the upper heater sections and have threaded engagement with the flue ends. By having the lower ends of the flues flared, as described, the heat from the burners more readily enters the fines. Upon assembling the heater the tapered ends of the pipes 7 and 8 are inserted in the openings 22 and 23 and are upset by means of a suitable tool which may pass through the openings 26 and 28. The flues are then inserted through the openings 26 and are drawn into place by the bushings 27, the flues acting in this vmanner as tie-rods and further assisting in maintainingthe tapered pipe ends in secure and water-tight engagement with the tapered openings. 'i'he pipe ends therefore need not necessarily be upset as shown, as the fiues and bushings will serve to keep the pipes in position. I thus provide improved construction of the heater parts which reduces the expense thereof and which enables the parts to be quickly and eificiently assembled.

l/Vhat I claim as new and desire to secure by Letters Patent is:

1. In a fluid heater, the combination with upper and lower heater sections, of pipes through which said sections communicate, said pipes having tapered ends adapted to fit in the tapered openings through the walls of said sections, the ends of said pipes projecting within said sections being upset to form a locking means for locking the pipes in position.

2. In a fluid heater, the combination with upper and lower heater sections, of pipes through which said sections communicate, said pipes having tapered ends adapted to fit in the tapered openings through the walls of said sections, the ends of said pipes being riveted after insertion in said. openings whereby said pipes are locked in position.

3. In a fluid heater, the combination with upper and lower heater sections, of pipes through which said sections communicate, said pipes having tapered ends fitting in the tapered openings through the walls of said sections, the ends of said pipes being riveted after insertion in said openings whereby said pipes are locked in position, flues passing through said sections and through said pipes, one end of said flues being tapered to fit the corresponding tapered opening through a wall of the sections, and clamping means engaging the other ends of said flues to lock said flues in position, said flues and clamping mechanism forming auxiliary locking means to clamp the tapered pipes in position.

4. In a heater, the combination with upper and lower heater sections, of pipes connecting said sections and communicating therewith, said pipes having tapered ends fitting in corresponding tapered openings in the walls of said sections, said pipes being riveted after insertion in said openings whereby said pipes are locked inposition, flues passing through said sections and through said pipes, and means for causing said flues to act as tierods between the sections to form auxiliary clamping means for clamping the tapered pipes in position.

5. In a heater, the combination with heater sections, of pipes connecting said sections and communicating therewith, said pipes having tapered ends to fit corresponding tapered openings in the walls of said sections, the ends of said pipes projecting within said sections, being upset to form a locking means for locking the pipes in position, flues passing through said sections and having one end engaging a wall of one section, and threaded bushings for engaging the other end of said flue with a wall of the other section, actuation of said bushings causing said sec tions to be drawn together, thereby forming auxiliary clamping means for holding the pipes in position.

6. In a heater, the combination with two heater sections, of pipes connecting said sections, said pipes having tapered ends to fit in tapered openings through walls of said sections, the ends of said pipes projecting in said sections, being upset to form locking means for locking the pipes in position by means of a tool introduced through adjacent openings in the opposite walls of the respec tive sections, flues extending through said pipes in said sections, one end of each flue being tapered and engaging said opening in said opposite wall of one section, the other end of said flue having threaded engagement with a bushing mounted in said opposite wall of the other section, actuation of said bushings causing the sections to be drawn together whereby auxiliary clamping means for securely locking the pipes in position is formed.

7. In a heater, the combination with upper and lower compartments, each compartment being comprised of annular sections arranged concentrically and communicating with each other, pipes connecting the sections of the upper and lower compartments, said pipes having tapered ends to fit within the tapered openings through the inner walls of the sections, flues passing through said sections and pipes, said flues being tapered at one end to fit in tapered openings in the outer wall of one set of sections, bushings for securing the other end of the flues with the outer wall of the other set of sections, means for securing the tapered ends of the pipes tightly within the tapered openings, the ends of said tapered pipes being riveted after assembly to lock the tapered ends in tight engagement within the tapered openings.

8. In a fluid heater, the combination with an upper and a lower compartment, each compartment being comprised of flat annular heater sections arranged concentrically and communicating with each other, pipes connecting the corresponding sections of the upper and lower compartments, said pipes having tapered ends to fit within tapered openings through the inner walls of the sections, flues passing through said sections and pipes, the lower end of each flue being flared outwardly to engage in a tapered opening through the lower wall of the corresponding lower section, the other end of each flue being threaded, a flanged bushing for each flue for passing through an opening in the upper wall the flared openings of said flues and about to of the corresponding upper section and into said sections and pipes.

engagement with a threaded end of the flue, In witness whereof, I hereunto subscribe actigation of said bushings causing the flues my name this 14 day of August A. 1)., 1905.

to e c amped securely to the sections and causing said sections to be drawn together, I DANIEL JOHN BUCK whereby said tapered ends are wedged tightly Witnesses within the tapered openings, and a heater be- CHARLES J. SCHMIDT,

low the lower sections for directing heat into 1 CATHERINE C. TOWNsEND. 

